Re: [PATCH 2/2] dax: fix bdev NULL pointer dereferences
From: Dan Williams
Date: Sun Jan 31 2016 - 14:52:14 EST
On Sun, Jan 31, 2016 at 10:07 AM, Matthew Wilcox <willy@xxxxxxxxxxxxxxx> wrote:
> One option that I've been looking at (primarily for x86-32) is
> having an rbtree of PFN ranges that drivers add to when they register
> peristent memory.
On this specific point we do already have find_dev_pagemap().